IB Physics Glossary



Browse the glossary using this index

Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL

Q

Quality factor

Q, is a measure of the ionization strength of various radioactive source.

Radiation type
Q
\alpha
20
Fast neutrons
10
Slow neutrons
3
Fast protons
1
\beta, \gamma, X-rays
1

Quantum efficieny

is the ratio of emitted electrons to incident photons falling on a pixel.
Increasing the quantum efficiency makes the CCD more sensitive to light.

Quasar

is a quasi-stellar radio source. A compact region in the center of a black hole. (d)